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Red Hat: CVE-2018-20843: CVE-2018-20843 expat: large number of colons in input makes parser consume high amount of resources, leading to DoS (Multiple Advisories)

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Red Hat: CVE-2018-20843: CVE-2018-20843 expat: large number of colons in input makes parser consume high amount of resources, leading to DoS (Multiple Advisories)

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
06/24/2019
Created
10/01/2020
Added
10/01/2020
Modified
12/15/2023

Description

In libexpat in Expat before 2.2.7, XML input including XML names that contain a large number of colons could make the XML parser consume a high amount of RAM and CPU resources while processing (enough to be usable for denial-of-service attacks).

Solution(s)

  • redhat-upgrade-expat
  • redhat-upgrade-expat-debuginfo
  • redhat-upgrade-expat-debugsource
  • redhat-upgrade-expat-devel
  • redhat-upgrade-expat-static
  • redhat-upgrade-mingw32-expat
  • redhat-upgrade-mingw32-expat-debuginfo
  • redhat-upgrade-mingw64-expat
  • redhat-upgrade-mingw64-expat-debuginfo

References

  • DSA-4472
  • CVE-2018-20843
  • RHSA-2020:3952
  • RHSA-2020:4484
  • RHSA-2020:4846

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